Airport services provider Cargo Service Centre has written to the government expressing interest in acquiring Air India's ground-handling arm AIATSL, civil aviation secretary RN Choubey said today.

This is the third company after Turkish firm Celebi and Indian conglomerate Bird Group to show interest in buying the profit-making subsidiary of the national carrier -- Air India Air Transport Services Limited (AIATSL).

Low-cost carrier IndiGo had earlier written to the Ministry of Civil Aviation expressing interest in international flight operations of Air India as well as its subsidiary, Air India Express.

"Cargo Service Centre has written to us for ground handling services of Air India," Choubey told reporters at an event here.

Cargo Service Centre provides cargo services at Delhi, Mumbai and Chennai airports, according to its website.